Magic Cube

Bugfix: in addition to deleting the files from local storage, also delete mentions of downloadable-but-now-built-in objects from Shared Prefs.

Remember the list of locally created Bandaged 3x3s.

delete icon, object and extras files from local storage when:

1) we delete a locally produced bandaged 3x3
2) it turns out that a downloaded object is already built-in (which can happen if we download an object and then upgrade to app version which builts it in)

Bandaged 3x3 UI: minor.

Bandaged 3x3 UI: remember touched cubits.

Bandaged 3x3 UI: delete created objects.

Bandaged 3x3 UI: translations for the dialog

Bandaged 3x3 UI: progress

Create the bandaged 3x3 icon: works now.

Create the bandaged 3x3 icon: something works, the shape is drawn, but it's entirely black. Investigate.